The seven conference on “Textile Composites and Inflatable Structures” (Structural Membranes 2015) will be organised on 19-21 October 2015 in Barcelona, Spain . The previous conferences of these series were held in Barcelona (Spain) on 30 June – 3 July 2003, in Stuttgart (Germany) on 2 - 4 October 2005, in Barcelona (Spain) on 17 - 19 September 2007, in Stuttgart (Germany) on 5 - 7 October 2009, in Barcelona(Spain) on 5-7 October 2011 and in Munich, (Germany) on 9-11 October 2013 The objectives of Structural Membranes 2015 are to collect and disseminate state-of-the-art research and technology for design, analysis, construction and maintenance of textile and inflatable structures. The conference will address both the theoretical bases for structural analysis and the numerical algorithms necessary for efficient and robust computer implementation. A significant part of the conference will be devoted to discuss advances in new textile composites for applications in membrane and inflatable structures, as well as in innovative design, construction and maintenance procedures. In summary, Structural Membranes 2015 aims to be a forum for discussing recent progress and identifying future research directions in the field of textile composites and inflatable structures.